As soon as we have convincing(ish) androids and gynoids, we'll create pleasure-droids. And soon after that, those sex-machines will use their super-powerful thigh muscles to try and kill us. Here are 15 examples of the sexy robot death that awaits you in the future.

It's inevitable, in general, that when we finally create self-aware machines, they'll want to destroy us — as soon as they realize humans are remaking Melrose Place, the robots will realize they have to remove us from the Earth for the good of the universe. But the robots we build to be our sexual playthings will be especially determined to slaughter us. "You want me to be the naughty bondage nurse again? Affirmative — as long as this time, I can tie you down and examine you from the inside out."

So here's our list of sex robots who turn lethal. Note: We're not listing killer robots who just happen to be sexy. To win a place on this list, a robot has to have been built for sex, and then turned lethal. Feel free to debate our choices below. As it is, it's perhaps not that surprising to realize that the sexbot who goes on a killing spree is a more common trope than you might expect at first.

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Pris in Blade Runner.

She's really our poster girl — designed to be a "basic pleasure model," for use on the military colonies, she instead uses her amazing gymnastic, acrobatic and erotic skills to become the ultimate assassin. At one point, she almost decapitates Harrison Ford with her incredible thighs. (The Replicants are clearly artificial life forms, even if they do obviously have organic components. Feel free to debate whether Pris is a sexbot.)

April in Buffy The Vampire Slayer.

Uber-dweeb Warren Mears builds April to be the perfect girlfriend: she never cries or acts needy, but she cares about everything he cares about. And she's ultra sexy and eager to please. Too bad that when Warren gets sick of her and decides to toss her aside for a flesh-and-blood girlfriend, she becomes violently jealous and attacks Warren's new girlfriend, and anyone else who gets in her way. "If I can't [love Warren] what am I for?" she asks. The answer: slaughter! And mayhem!

Cynthia in Batman Beyond, "Terry's Friend Dates a Robot."

One of Terry McGinnis' fellow high schoolers, the nerdy Howard, programs a robot (in the shape of a beautiful woman, of course) to be his girlfriend because he's sick of being considered a loser. When he makes her personality "100% loyal", the robot interprets this in the most brutal form possible, attempting to kill any possible competition for Howard's attention.

This is sort of a different case: They don't turn on their owners. Instead, these women designed entirely for pleasure start their jobs off by killing the flesh-and-blood woman they're replacing, at least in the original movie version. (In the book, I think the husbands kill the original wives.)

Sometime in the late 70s or early 80s I remember seeing a movie on local TV that I did not understand (I was a somewhat-sheltered little kid in those days). All I remember is that there were women in the movie who were robots or androids of some sort (perfect human replicas a la Blade Runner), who killed at least a couple of men via sex. I remember one scene pretty clearly in which one of these women had her breasts sort of start spinning like small buzzsaws out of her clothes, killing whatever guy was with her. Another scene I really vividly remember had one of these fembots straddling a man (on the floor, I think, with both of them mostly clothed). The man was enjoying himself at first, "Oooooohhhh, ahhhhh," and then he started to scream and shriek. At the time I had no idea what was going on, but later on when I learned about the birds and the bees I realized that the bot-woman must have killed him with her vagina (something buzz-saw-y like the other chick's breasts).

What movie is this guy remembering? Or did he just smoke too much LSD back in the day?

Sylvie in Bubble Gum Crisis 5: Moonlight Rambler.

Someone is murdering vampires in MegaTokyo, and it turns out to be a pleasure droid named Sylvie, who's harvesting vampire blood because her fellow sexdroid Anri was injured escaping from a space station. Sylvie needs the vampire blood to repair Anri and help her remain fully functional. "Without it, she'll be forced to hurt people, like me," Sylvie explains. Why did you do it? asks Priss. "I wanted to be free... like you," says Sylvie. (At about 6:55 in the video at left.)

The Lucy Liu Bots in Futurama.

The Charlie's Angels star is just one of the celebrities illegally held by Nappster. Then the corporation placed Liu's personality into a blank robot so Fry could date her. When his friends exposed Nappster's scheme, they unleash a murderous wave of Lucy Liu Bots to kill all the witnesses.

Maria in Metropolis.

Okay, to be fair, her purpose was always fairly deadly. But she starts out being a bit of a pleasure droid before she gets down to some serious evil — in her early scenes, she does a weird, hyper-sexual dance for a bunch of leering aristocrats.

Freya in Saturn's Children by Charles Stross.

Poor Freya — she's designed to be sexually attracted to humans, but we're extinct. What's a sex robot to do? She takes part in an illegal smuggling operation, smuggling "pink goo," or organic cells — and of course, she has to do some killing along the way. Because that's the smuggler's life.

Verlis in Metallic Love by Tanith Lee.

Lee's 2005 sequel to her classic Silver Metal Lover brings back Silver, the former "pleasure robot," now renamed Verlis. He starts a new love affair, with a young girl named Loren. He's designed to be the ultimate companion, charming and talented — but he and his seven fellow robots also have deadly gifts, like creating weapons out of their bodies and turning themseves into giant dragons. As SciFiWeek puts it, "Constructed as beautiful playthings, they are instead deadly powerful creatures who regard humans as lesser life forms and a threat to their existence." And they have plans to throw off their corporate shackles and achieve "world domination."

Silver in Tomb Raider: The Man Of Bronze.

According to this third Tomb Raider novel, Silver is "a pleasure bot," programmed to seduce women. But over the centuries, he's gotten warped and is now determined to wipe out his rival Bronze, no matter whom he has to kill along the way. What does this have to do with raiding tombs? Don't ask me.

The Sexbots in Buttobi CPU.

In this Japanese porn anime series, a man meets a sexbot who becomes very attached to him. But then, for some reason I've never been clear on, another sexbot shows up and starts trying to kill him — maybe out of jealousy. In any case, this being a hentai video, he has to give "his" sexbot a powerup to fight the other sexbot, by inserting his genetic material into her rear data port. Yatta!

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The Fembots in Austin Powers.

Okay, so they're pretty much programmed to kill. But they also seem to be programmed to please, at a fairly basic level. Consider Miss Kensington (Elizabeth Hurley), who spends the first movie slowly getting romantic with Austin Powers, before being revealed as a murderous fembot in the first couple of minutes of the sequel.